Spring structure.



F. P. D'ARCY.

SPRING STRUCTURE.

APPLICATION FILED JUNE I0. m4.

lutvnlwl 11:1 ".1, 19143.

2 SHEETS SHEETZ 311 uemto'o UNITED STATES FRANK P. DARCY, OF KALA'MAZOO,MICHIGAN.

SPRING STRUCTURE.

Specification of Letters Patent.

Patented May S). 1916.

Application filed June 10.1914i Serial No. 844131.

To all whom it may concern h it known that I. FRANK I. DARCY, a citizenof the United States. residing at Kalamazoo. in the county of Kalamazooand State. of Michigan, have invented certain new and usefulImprovements in Spring Strimtnres, of which the following is aspecification.

This invention relates to improvements in spring structures.

The objects of this invention are: First, to provide an improved cushionspring structure in which the front edge. of the cushion is always heldtaut and does not sag or yield under the weight of the sitter. Second,to provide in a spring structure an improved clip for securing a borderwire. to the spring eoil. 'lhird. to provide in a structure of the classdescribed ii'nproved means for coupling the central portions of the coilsprings together.

Further objects. and olvieets relating to details and economies ofconstruction and operation will definitely appear from the detaileddescription to follow.

I ac omplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is i-learlv pointed out in the. claims.

strurturu constituting a preferred enihodinn-nt ol' m v invention isillustrated in the :u-eonipanving drawing forming a. part of thissperil'ieation. in which:

Figure l is a top plan view of a structure. enihodving my invention. thepadding and faln'iev heing emoved from the top of the spring structure.Fig. II is a transverse sectional view on the irregular Line 2- 2 ofFig. lli. Fig. III is a vertical sectional view taken on a linecorrespoiuling to the line 1 of Fig. 1, showing the top of the springstructure covered with padding. Fig. l\' is a view similar to Fig. III,showing the parts in the position they assume when depressed h theweight of the sitter. Fig. is a plan view of the blank from which theclips securing the ends of the hand spring 7 are made. Fig. VI is anenlarged detail sectional view of said clip taken on the line (S\'3 ofFig. I. \/II is an enlarged detail sectional View on the line T? of Fig.VIII, showing in detail the construction of one of the clips connectin;the horder wire with one of the spiing mils; Fig. VIII is an enlargeddetail secdefined and tional view of said clip on the line s -s of Fig.VII. Fig. IX is a plan view of the hlank from whi h said clip l made.

In the drawing, similar reference ehararters refer to similar partsthroughout. the seicral views, and the sectional views are taken ihllilllg' in the i'ei'tion ol' the. little arrows at the ends of thesection lines.

Considering the numbered parts of the drawing, m v improved springstructure is provided with horder wires 2. 3 at top and hottoni, andwires 3 and 4 running transversely of the top and hottom frames The topof said spring structure is covered by padding 1, which padding extendsover the front edge. ol the. ellsliioi;

and is connected to the upper edge oi the. strip of iahrii: 2' withwhich the trout edge. oi the cushion is finished. The

coil springs 5 are secured at top and hottom to the top and bottomframes, l'thlkt? tivcly, and vieldingly support. the top of the. springstructure. At the front corners I provide the auxiliary springs 18 whichare made of stiller material than the coil springs 5 and which are ofslightly greater diameter so that they surround the coil springs 5 atthe front corners. lhcsc auxiliary springs 15 are secured at the lowerend to the hottoin frame and extend upwardly and are secured at theirupper end to the horde! wire 12, which will hereinafter he described ingreater detail. These auxiliar springs serve to reinforce the cor nersof the cushion so as to "prevent the corners from sagging under a load.

I provide strips (3 extending between adjaccnt roils, the ends of saidstrips being wrapped around the. wires of the spring coils D. as clearlyshown in Figs. II and IV. it; this means, I prevent the centers of thecoil springs from heing displaced relative to each other and the coilsprings are held in place substantially parallel to each other whenweight is brought to bear upon them. This is of especial advantage withsprings of the hour glass shape because, unless some provision such asthis is made for holding the centers of the spring in place relative toeach other, they have a. tendency to how out in the center when a weightis hrought upon them. By providing strips such as U it is possible touse springs of the hour glass shape of weaker material without thedanger of their bowing out in the center.

wire er'tending across the top cl to vie front edge of and top nnc. Aplurality of of lg steel have a hing- 5 ion at one end on said wire 11by of the clips These clips 8 are ruin :1 blank of the form shown inprovided with u tongue 9 at one and lot 1- at the other end adapted 10 tlvltli't. the tongue 9. A corresponding slot to permit. tlu: pus, age ofthe tongue t'o nwl in the end of the band spring 7 and the Emil oi theblank 8 is \\'rap ed around win ll, the tongue 9 passing islot or: idedin the end of the l u at through the correspondl'. loin the luuly of thel hink The i th-sn bent built upon itself securely cluinpu 4f the partsoi the clip together.

a l also provide a. U-qliuped border wire. 12 which on s .011 the frontedge oi the spring structure, clearly shown in. Fi es ll. Ill and and issecured to the coils by means of clips, '13 w irh will be hereinu'l'tcr'rribed. Th s border wire is at tzu'lied Slifll'b distance below the topof the s ucture and the lower ends of the T are hinged to this bordernun f clips 8 in the lint: way 0 upper cut are connected to the ln caseswhere the lower ends of the band springs 7 are adjacent the coils theclip 8 embraces not only the wire 12 but; also the adjacent wire of the.coil, clearly shown in Fig-s. II. In. and IV. I

111 Figs. VII to IX. inclusive, I have shown one of the clips by meansof which the wire l' secured to the spring coils. Th rls at a bodyportion. 13 propuir oi" tongues 14 along one edge unu :i tongue 15projecting from the central portion of the other edge. The

hlzznli from which the clip is made has a longitiu'linzil groove 14adapted to receive th wire 12 and a groove having a curvw' correspondingto the radius of the coil 5 to which it is secured so that the wire ofsaid .coil will. snugly fitwithin said groove 15. The tongue 15 iswrapped around the wire of coil and extends over on topcf the .re Illand the tongues are Wrapped ar und the wire 12 on either side of thetongue 1'5. By this means 1 secure a very .lie very readily understood.

strong and effective. clip for attaching the above. the operation of thestructure should In Fig. III, I have shown the parts as they are when intheir natural position with no weight upon the rushinn. When there is aweight brought to l Ct1l' upon the cushion, as when a person is seatedupon it, the springs are depressed as shown in Fig. IV, and the bandsprings T are bowed upwardly, 215 shown in Fig. ll'i the upper ends ofsaid band springs being curried kl()\ .'ll\\'2\l(ll by their connectionwith the top frame 2 and the parts assuming the position shown in Fig.IV. By this uu-nn thv top of the front edge of the cushion is held insubstantially the same position that. it nwupicd when the cushion was inits nuturul state und thus the front edge (at the cushion is preventedfrom sagging wheu a j'lit plzued upon it- :ind the front ol the cushionis held taut at all times. This ronstriirtion also tends to keep thefront edge of the. cushion in place beneath the lilllLS of the sitter sothat :1 very com fortulilr Cushion is utfordcd.

The springs T urcinudc of :1 very fine and high grade steel possessinggreat resiliency which I hurtliere shown may be varied considernl lywithout departing; from the spirit of my invention Ill-ll, therefore, Ido not wish to be restricted to the same. However, I have found thisparticular form to be preferred and. therefore, I desire to claim thevszunc specifically as well as broadly-as indicated by my appendedclaims.

, Having thus described my invention, what I claim as new and desire tosecure by Lettors Patent is:

1. A spring structure comprising top and bottom frames, coil springscarried by said frames, a bottom wire extending across the front of saidsprin structure and secured to the coil springs, said coils beingprovided with a clip having a channel receiving said wire and a secondchannel curved on the radius of the coil, said clip being provided withtongues which are w apped around said coil and said border wirerespectively WI ereby the border wire is secured to said spi'ng coil, :1top wire secured to and extending across the top frame parallel tothefront edge thereof, a plurality of band springs bowed out at the frontedge of said spring structure having hinging connections at lie 'earried therehy,

ends with said top and bottom wires respeeti ely. said hand springsheing pro vided with slots in their ends, and a plurality of elipsproridial with a slot at one end and a tongue at the other end eaeh ofsaid clips heing wrapped around one of said wires with the tonguethereot extending through a slot in one of said hand springs and throughthe slot in the end of said elip and all'ording a hinging eonneetion torthe ends of said hand spring ,all eoaeting suhstantially as deseriiiedfor the purpose speeihed.

'2. spring strueture eoniprising top and bottom frames (oil springsearried hy said tralnes. a hottoin wire extending aeross the front, otsaid spring strueture and seeured to the eoil springs. a top wireseeured in and extending aeross the top frame parallel to the trout edgethereof. a plurality ot hand springs howed out, at the l'iont edge oisaid spring struetizre having hinging eonneetions attheir ends with saidtop and hottom wires respeetiiely. said hand springs heing provided withslots in their ends, and a plu rality of clips provided with a slot atone. end and a tongue at the other end. eaeh ol' said (lips heingwrapped around one ot' said wires with the tongue thereot extendingthrough a slot in one of said hand springs and through the sl t in theend of said elip and atl'ording a hinging eonneetion tor the ends ofsaid hand spring. all eoaeting suhstantially as deserihed tor thepurpose speeitied.

3. A spring strueture eoniprising top and hottoin traines, a pluralityoi eoil springs a h ttoin wire se iired to and earried hy e rtain ol'said oil prings. a top wire earried hy the top traine and e\-- tendingparallel to the trout edge thereol and a plurality of hand springslltHing hing ing eouneetions at their ends with said top and bottom wiresrespw-tirely, said hand springs heing howed outwardly around the topfront elge of said spring struetnre. all coin-ting sulr tantially adeserihed tor the purpose speeilied.

4-. A spring struetuie eoniprising a plu rality ol eoil springs suitahlysupported. a wire earried hy eertain of said eoil springs. a wireearried hy the tops of said sprin s. and a plurality of hand springsharing hinging eonneetions at their ends with said top and hottoni wiresrespeetirely. said hand springs heing' howed outwardly around the topfront edge of said spring strut-tare. all eoaeting suhstantially asdeserihed tor the purpose speeitied.

5. A spring sti'ueture eomprising a pluraiity ol' eoil springs suitahlysupported. a plurality of hand springs having a hinging onneetion withthe top of said spring struehire at one end. and having at their otherends suitahle eonneetions with the spring being howed outwardly frontedge thereot. all eo struelure and around the top aeting suhstantiallyas des rihed tor tho purpose speeitieil.

spring structure eoinprising a plurality ol' eoit springs. and aplurality of hand s n'ings eonneeted at on end to the top of said springstrueture and at the. other end to said spring strueture at a point elow the top front edge thereot. said hand springs lu'liljl' howedoutwardly around the t p trout edge ot said spiiug strne nri. a lemu-ting suh ntially as deserihi l athe purpose speeil'ieil.

T ln a sp ing strueture. the l'iiiiilwizzitliut with a plurality of eoilsprings uiiahly upported. a plurality of hand |)t!l) j'. s iured attheii en s to wires earried said spring ti'aetiire. and hnrgingt"t)llllll )ll; tor the ends oi' said hand pilngs eoinpri ing elipsproiided with a tongue at one end th reot and a orresponding slot at theoth r end thereot. the tongues, ol said elips pass ing through rddSprovid d in said hand springs and through the eorresponding slots in theends oi v aid elips. ea h oisaid tongues heing hent o\er upon the hod olthe elip. and eaeh of said elips enihraeing' one ol said wires. alleoavting uli tantially as deserihed tor the purpose peeilied.

h. spring st ru ture eonipiising top and hottoni l'i'aine--. il springsrarried by said l'raines. a hottoni wire e\iending a r ss the. trout ofmild pring struetin'e and seeured to the eoil springs. auxiliary springssurrounding eriain ol' aid eoil springs. said auxiliary pring heing setured to the hot toni frame at the lower end the upper ends of saidsprings heiug aiii'e l to said hottoni wire. a top wi e seeured to andxtending the top i'ranie parallel to the front edge there -l. a pluialitoi hind springs howed out at the trout said spring strueture h inghiuging i nneetions at the r ends with said top and hoitoui wiresrespeeti ely. said hand s rin 's heing pro i'iiled with slots in theirends. and a plu raiity ot' elips provided with lot s at on end andtongue at the other end. eaeh ol' said edge i-l elips heing wrappedaiound one of said wires with the tongue thereot i-\tending a roll ol'the spring. said elip having a ren- Riv hrs] tongue at its eurvedohannel edge, the lmss-a of said central tongue corresponding in widthto the chord of the said curved rhannel, and a pair of tongues at its1ongrimrlinal Nhnnnel edge spaced to receive sail} xenirul iongueheiween men] when the tongues are fumed.

In witness whereof, I have hereunto set my hand and seal in the presenceof two witnesses.

FRANK P. DARCY.

Witnesses GEO. T. FORCE, RUTH B. HALL.

